With its retro-video-game score and ?Goonies?-style gang of misfit characters, the movie plays like a throwback to Spielberg-produced adventure films of the ?80s. And yet, the premise feels wobbly at best.

Joe Cornish?s long-awaited and largely delightful follow-up to ?Attack the Block? is a unicorn of a children?s fantasy movie: It?s imaginative, it?s heartfelt, and it never feels like it?s trying to sell you anything more than a measure of hope for the future